* Rename all email templates in the form TYPE_#_DESCRIPTION.txt for
better sorting.

* Streamlined committer invite process:
* Per discussion on dev@community with Craig Russell, new recommendation
is to point the candidate immediately at the iCLA so they can get on
with it, rather than unnecessarily delaying the process.
* Info in the initial response after committer acceptance was moved into
the next or prior email, as appropriate

* Addition of new PMC member vote / result templates

* Minor updates to the release process templates, consistent with the
2.2.0 and 2.3.0 releases